How to Build a Composting System from Pallets

After seeing countless photos of these systems on Pinterest and in the blogosphere, we finally got around to making our own composting system from pallets this weekend. It's really quick and easy - here's how we did it in less than an hour.

Love the idea but concerned with the trend to use pallets. pallets are treated with chemicals and often soaked in oils and if they originated in foreign countries, who knows what is in them. Outside it is a concern with food gardens but inside it can be toxic. ant thoughts? my husband suggests using new rough wood fencing for the rustic look but of course them we aren't reclaiming wood